If I do what I'm thinking about, I would need the whole 9 yards, even a DS and radiator. (I've got a 5.0 stock rad out in the garage but it's probably different.)This is for Cochese's shell. I'm thinking about getting it up and running as a 4 banger to get me to work and back and work on the turbo car at a leisurely pace. When I get that the way I want it, I'll probbly just swap all the goodies into the 4 banger. Needless to say, 4 cyl Mustangs have not been in my vocabulary so I'm a bit of a noob as far as what I need. What would I do with the extra 4 spark plugs? A little good mileage for a while might be refreshing though.